feat: Add CometRowToColumnar operator #536

Job	Run time
ubuntu-latest/java 8-spark-3.4/rust	4m 40s
ubuntu-latest/java 8-spark-3.2/java	4m 38s
macos-14(Silicon)/java 8-spark-3.4/rust	4m 0s
ubuntu-latest/java 8-spark-3.3/java	4m 36s
macos-14(Silicon)/java 8-spark-3.2/java	4m 46s
ubuntu-latest/java 8-spark-3.4/java	4m 36s
macos-14(Silicon)/java 8-spark-3.4/java	4m 49s
ubuntu-latest/java 11-spark-3.3/java	4m 38s
macos-14(Silicon)/java 17-spark-3.3/java	4m 46s
ubuntu-latest/java 17-spark-3.4/rust	4m 39s
ubuntu-latest/java 17-spark-3.3/java	4m 37s
macos-14(Silicon)/java 17-spark-3.4/rust	4m 38s
ubuntu-latest/java 17-spark-3.4/java	4m 39s
macos-14(Silicon)/java 17-spark-3.4/java	4m 49s
${{ matrix.os }}/java ${{ matrix.java_version }}-spark-${{ matrix.spark-version }}/${{ matrix.test-target }}	0s
	1h 4m 51s

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